/* reset styles */
/*=========================================================================
DEMO TRACKS
=========================================================================*/
#demoTracks {
  padding: 18% 0 12%;
  width: 84%;
  margin: 0 auto;
}
@media screen and (max-width: 768px) {
  #demoTracks {
    margin: 0 auto 36%;
  }
}
#demoTracks .one_period {
  width: 100%;
  height: auto;
  margin: 0 auto 14%;
  max-width: 750px;
}
#demoTracks img {
  width: 100%;
  height: auto;
  display: block;
  -o-object-fit: cover;
     object-fit: cover;
}

/* ------------------------------------------------------------- */
.movie_box {
  width: 100%;
  height: 100%;
  display: block;
  overflow: hidden;
  position: relative;
  z-index: 1;
  margin: 0 auto 9%;
}
.movie_box iframe {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  aspect-ratio: 16/9;
}

/* ------------------------------------------------------------- */
.track_title {
  width: 60%;
  height: auto;
  margin: 0 auto;
}

/* ------------------------------------------------------------- */
dl.track_detail_box {
  width: 100%;
  height: auto;
  margin: 0 auto;
}
dl.track_detail_box dt, dl.track_detail_box dd {
  height: auto;
  margin: 0 auto;
}
dl.track_detail_box dt {
  width: 40%;
  margin-bottom: 9%;
  cursor: pointer;
}
dl.track_detail_box dt:hover {
  opacity: 0.75;
}
dl.track_detail_box dt:hover img {
  opacity: 0.75;
  -webkit-transition: 0.2s all;
  transition: 0.2s all;
}
dl.track_detail_box dd {
  width: 56%;
  display: none;
}

/* ------------------------------------------------------------- */
ul.lyric_list {
  list-style-type: none;
  width: 100%;
  height: auto;
  margin: 0 auto;
}
ul.lyric_list li {
  width: 100%;
  height: auto;
}